Method and apparatus for twisting filaments



May 18,1937. f- 0mm 2,080,918 v METHOD AND APPARATUS FORTWISTING'FILAMENTS Filed Feb. 28, 1934 INVENTOR. fTea/wz fiO/V/GPatented May 18, 1937 'umrso STATES METHOD AND mm'rus FOR rwls'rnmmamm'rs ammgnmtet Application February 28, 1934, semi n 713,252 4Claims. (01. 117-24 The invention relates to a method and-apparar' tusfor the manufacture of textile threads and in particular to themanufacture of such threads formed bytwisting together a number ofseparate individual filaments. The invention isapplicable to all kindsof filamentary material which are adapted to be twisted t g ther into asingle thread, but is particularly useful when applied to such materialsas cotton, wool, silk, rayon and the like. V

The object of this invention is to provide a simplified means and methodfor twisting individual fibers and or filaments into the thread and atthe same time produce an increased output of the finished product.

: Hereto'fore it has been customary to unwind the filaments to betwisted from a source of sup:

ply which may be mounted on a spindle, thence to conduct them over aroller, referred to as the is known in the art as a fiyer or traveler,or ringtwister; that is, a small open loop-like element adapted to slidealong the inner circumference of aciosed ring,'-thence to the windingspool or core, mounted on a rotating spindle, the rotation of whichimparts to the filaments one twist for eac revolution of the spindle.

It has been proposed to eliminate the necessity of using the fiyer ortwister by combiningthe 30 feeding roller with thewinding roller,referred to in the art as the take-up roll or core; but this proposalhas the disadvantage that while the diameter of the feeding rollerdecreases and the diameter of the take-up core increases due to the 35transfer of the thread from the former to the latter, the ratio oftwists to core revolutions still remains constant; hence the finishedproduct will not be of uniform texture, for the number of twists perlinear unit of thread will be much greater at theend nearest the corethan at the outer end.

In the practice of the present invention, not

only is the use of the fiyer or ring-twister rendered unnecessary, but aproduct can be produced which is of smooth and even texture, having thesame number of twists per linear unit throughout its entire length, andin addition the number of twists per linear unit can be substantiallydoubled and the output of finished product increased inproportion. I 7An important featureoi the present invention. consists in imparting atwist'to the filamentary materials Just as or after they are unwoundfrom the supply roll, and a second twist after they have 55 left thefeeding roll and just as they are about feeding roll, from which theyare fed to the twisting and winding mechanism," thence through what.

to be rewound on the take-up roll. The operation of the mechanism can beso regulated that twists are imparted at the two points simultaneo l andif the winding and unwinding rolls rotate in the same direction say, forexample; 5 counter-clockwise,and the feeding roll in the oppositedirection, say clockwise, opposite directional twists will. be impartedto the filaments; that is,

at the time the portion of strand Just coming ofl the supply roller isgiven a twist in'one direction, 10

the portion about to be wound on the take-up j roller will .be given atwist in the opposite direction. Thus is produced a thread having twotwists for each revolution of the take-up spindle.

The, mechanism for carrying out the invention 15 will be best understoodby reference to the accompanying drawing in which:

.Fig. 1 represents a diagrammatic illustration of the improved methodselected particularly to bring out the opposite directional twisting ofthe ends of the filament and {shown with the employment of the. ordinaryring traveler.

Fig. 2 is a diagrammaticend view 0! Fig. 1.

Fig. 3 is a view partly in sectionof the preie'rred embodiment of theinvention showing both spindles rotating in;the same direction, asindicated by the arrows. and a reciprocating, nonrotating distributingdevice.

Fig. 4 is a greatly enlarged portion of the filament as twisted by thepreferred method shown in Fig. 3.

Fig. 5 is a view showing the manner in which the distributing device isprevented from rotating. I

Fig. 6 isa view-on the line 6-6 of Fig. 3.

In the drawing A represents the core oia package of filamentconstituting the supply and B represents a core on which the filament iswound up after being twisted. 0 represents a feeding roll or drum whichreceives \the filament 40 from the supply package on core A and deliversit to the take-upcore B.

The package or supply core A and the take-up core B (Fig. l) aresuitably and demountably carried on shafts or spindlesAl and BI. In Fig.3 the cores are shown as rotatably mounted on fixed hollow sleeves orspindles AI- and B2 whose lower ends-are rigidly secured in standard Dproximately the same size.

The spindles a: and B2 (m. s) areunven by suitable mechanism such as thepulleys A3 and B3 and belt E.

For purposes of this specification it may be considered that thespindles are rotating in the direction indicated by the arrows.

Belt E is provided with idler F (Figs. 3 and 6) to assist in maintainingsuitable driving contact between the pulleys AI and B3.

The delivery shaft or roll C is mounted in bearing Cl which is a part ofthe frame of the machine (not shown). Roll C is rotated by any suitabledriving mechanism (not shown) to draw the filament from the supplypackage A and deliver it to the take-up core B at the rate of speedrequired to produce the desired number of twists in the filament.

The filament designated as His drawn through a guide I from the supplypackage and is given one or more turns about delivery shaft C asindicated at HI and then passes through guide II to the take-up spool Bas shown at H2.

For the purpose of efi'ecting even distributio of the finished threadover the take-up core, distributing device G is detachably mounted overthe spindle B2 with an extension of the central shaft GI running throughthe spindle B2. A slot G2 in the lower end of shaft GI is adapted, tofit into a horizontal bar J, which holds it against rotation with thespindle B, and the up-and-down movement of which permits the distributorto move up and down. The bar J extends below the open ends of all thespindles shown.

The thread coming from the feed roller is drawn over rings G4 and G5,supported by the' vertical spokes G3, full and free movement of thethread being permitted as the spindle rotates. In Fig. 1, R and RIrepresent the ring, and T and Ti represent the traveler such asordinarily used in connection with twisting operations. These parts actto distribute the filament on the respective core. However, aspreviously stated, the preferred embodiment is shown in Fig. 3 in whichthe filament is free to move about the outside of the distributing ringwithout the aid of a traveler. g

It may be stated that the various moving parts of the mechanism arecaused to move or rotate at the desired rate by any suitable drivingmeans. This means is not shown since any well known means could be usedfor this purpose.

And, while, for convenience, only one supply package is shown in thedrawing for each take-up core, it will be understood that any number ofsupply packages may be used in connection with one take-up spool. Whenmore than one supply package is used for each take-up core and if allthe filaments in the assembled thread require an equal number of twists.then all of the supply packages should be rotated ,alike. .However, incases where the finished thread requires that some of they individualfilaments be twisted more than others, the supply packages carrying thelatter should not be rotated to produce the extra twist. In the methodsprevious to the invention this doubling operation was performed as aseparate operation, but with my improved method the doubling operationor the assembling of separate filaments of various twists can beproduced in'one operation.

The invention may be variously modified and embodied within thescope ofthe subjoined claims.

1. Mechanism for twisting stranded material, comprising in combination,a plurality of core supporting spindles provided with tubular openingstherein, one of said spindles serving to take up strand materialreceived from another of said spindles, a strand distributing deviceprovided with a projection fitting in the opening ofsaid take-upspindle, means for rotating said spindles,.means for feeding strandmaterial to said take-up spindle, and means for holding said stranddistributing device against rotation.

2. Mechanism for twisting stranded material,

comprising in combination, 'a plurality of spindles and supportstherefor provided with tubular openings therethrough, one of saidspindles serving to take up strand material received from another ofsaid spindles, a strand distributing device provided with a projectionfitting in the opening of said take-up spindle, means for rotating saidspindles, means for feeding strand material to said take-up spindle, andmeans for holding said strand distributing device against rotation.

3. Mechanism for twisting stranded material comprising incombination, aplurality of aligned spindles. and supports therefor provided withtubular openings therethrough, one of said spin-' dles serving to takeup strand material received from another of said spindles,-means forfeeding strand material to said take-up spindle, a strand distributingdevice provided with a projection extending through the opening of oneofsaid spindles, and means positioned below the openings of all of saidspindles for cooperating with the lower end of said projection forholding the strand distributing device against rotation.

4. Mechanism for twisting stranded material comprising in combination, aplurality of aligned spindles and supports therefor provided withtubular openings therethrough, one of said spindles serving to take upstrand material received from another of saidspindles, means for feedingstrand material to said take-up spindle, a strand distributing deviceprovided with a projection extending through the opening of one of saidspindles, and a bar positioned below the openings of all of saidspindles for engaging the lower end of said projection to hold thestrand distributin device against rotation.

FRANK HONIG.

